漏了D在AB上∵AF平分∠CAE，那么∠CAF=∠EAF=∠DAFAF=AF，AC=AD∴△ACF≌△ADF(SAS)∴CF=DF，∠ACF=∠ADF即∠GCF=∠EDF∵CF=DF，∠GCF=∠EDF，∠CFG=∠DFE(对顶角相等）∴△CFG≌△DFE(ASA)∴FG=FE
